The car brand called the pitch in May and it is thought to be a statutory review.
Vizeum, Starcom, MEC and Initative have been involved in the pitch process. Initiative is also no longer in the running for the account.
The Dentsu Aegis Network shop picked up the buying account in 2005, and added the planning in 2009 and digital buying to its books in 2011.
BMW and Vizeum did not comment.